196 结果:

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Charging technology for electric and hybrid vehicles

 
AC charging stations can often be found at home, in hotels, public parking areas or at the workplace. A great advantage of AC charging is that the conventional 230 V/400 V AC power supply  

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Intensive care units and operating theatres electrically safe

 
In modern hospitals, alarm and warning messages in the electrical system are quickly and automatically signalled by Bender insulation fault location systems. This saves time and money and protects  

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Electrical safety for high resistance grounded systems

 
There are many kinds of systems that typically use a high resistance grounded power supply. Most of them usually require a high availability, reliability and thorough safety for their personnel and  

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Continuous availability, operational reliability and cost efficiency through permanent residual current monitoring

 
Comparison of the necessary insulation resistance measurements with an RCM-monitored electrical system The following section compares conventional DC insulation resistance measurement with the  

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How does residual current monitoring work?

 
All conductors of the outgoing circuit to be monitored (except the PE conductor) are routed through a measuring current transformer. In a fault-free system, the sum of all currents is equal to zero  

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IT system: Unearthed systems for maximum availability

 
As input to unearthed IT systems, either a transformer or an independent power source, such as a battery or a generator are used. Since no active conductor is connected to earth with a low  

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IT systems as reflected in the standards

 
Figure 13: The second fault in the IT system In accordance with IEC 60364-4-41:2017-03, subclause 411.6.4, after an initial fault occurs, the conditions for an automatic disconnection following a  

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Insulation resistance - testing, measuring, monitoring

 
During periodic tests the measurement of the insulation resistance is part of the measurements to be undertaken in accordance with DIN VDE 0105-100 (VDE 0105-100):2009-10. The insulation  

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Advantages of the IT system

 
Conclusion The IT system has many advantages over earthed systems and is not only suitable for the high demands in operating theatres or nuclear power plants but for practically every application.  

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Types of distribution systems for power supply

 
signs and symbols * weak ** average *** good **** excellent Evaluation and comparison Criterion TT TN-C TN-S IT Safety of personens *** *** *** *** Safety against fire hazard ***  
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